Distribution of marine birnavirus in cultured olive flounder Paralichthys olivaceus in Korea

Jung, Sung‐Ju; Kim, Seok-Ryel; Joung, Il-Yong; Kitamura, Shin-Ichi; Ceong, Hee-Taek; Oh, Myung‐Joo

doi:10.1007/s12275-008-0004-7

Cited by 20 publications

(18 citation statements)

References 35 publications

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“…1). 6,20 Genogroup I included strains from Canada, the United States, and Japan; genogroup II included isolates from Denmark, Taiwan, and Japan; genogroup III included isolates from France, Norway, Thailand, England, and Denmark; genogroup IV included isolates from Canada and England; genogroup V included Canadian isolates; genogroup VI included German isolates; and genogroup VII was composed of Korean isolates (FJ, FK, FWA, NC1, FM2, and DS) from cultured olive flounder and Japanese isolates from marine fish and molluscan shellfish. Seven isolates in the current study were classified into genogroup VII and were closely related to isolates from Korean and Japanese coastal areas.…”

Section: Research-article2013mentioning

confidence: 99%

A survey of fish viruses isolated from wild marine fishes from the coastal waters of southern Korea

et al. 2013

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Abstract.A survey was conducted to investigate viral infection in 253 wild marine fishes harvested in the southern coastal area of Korea from 2010 to 2012. The fish that were captured by local anglers were randomly bought and sampled for virus examination. The samples were tested for presence of virus by virus isolation with FHM, FSP, and BF-2 cells and molecular methods (polymerase chain reaction and sequencing). Of the 253 fish sampled, 9 fish were infected with virus. Aquabirnaviruses (ABVs), Viral hemorrhagic septicemia virus (VHSV), and Red seabream iridovirus (RSIV) were detected in 7, 1, and 1 fish, respectively. Molecular phylogenies demonstrated the detected viruses (ABV, VHSV, and RSIV) were more closely related to viruses reported of the same type from Korea and Japan than from other countries, suggesting these viruses may be indigenous to Korean and Japanese coastal waters.

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Section: Research-article2013mentioning

confidence: 99%

A survey of fish viruses isolated from wild marine fishes from the coastal waters of southern Korea

et al. 2013

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“…These viral infections can also be found in association with other bacteria ( Streptococcus iniae, Edwardsiella tarda and Vibrio spp. including V. harveyi , V. fischeri, V. alginolyticus, V. splendidus, V. ichthyoenteri ) or other viral pathogens (viral nervous necrosis virus [VNNV], viral haemorrhagic septicaemia virus [VHSV], lymphocystis disease virus), which results in higher mortalities (Jung et al, ; Oh et al, ; Pakingking et al, ).…”

Section: Introductionmentioning

confidence: 99%

Co‐infection of rainbow trout (Oncorhynchus mykiss) with infectious hematopoietic necrosis virus and Flavobacterium psychrophilum

Bruce

Oliver

et al. 2019

Journal of Fish Diseases

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Co-infection of rainbow trout with infections haematopoietic necrosis virus (IHNV)and Flavobacterium psychrophilum is known to occur, and it has been speculated that a combined infection can result in dramatic losses. Both pathogens can persist in fish in an asymptomatic carrier state, but the impact of co-infection has not been well characterized or documented. In this study, it was hypothesized that fish co-infected with F. psychrophilum and IHNV would exhibit greater mortality than fish infected with either pathogen alone. To test this, juvenile rainbow trout were co-infected with low doses of either IHNV or F. psychrophilum, and at 2 days post-initial challenge, they were given a low dose of the reciprocal pathogen. This combined infection caused high mortality (76.2%-100%), while mortality from a single pathogen infection with the same respective dose was low (5%-20%). The onset of mortality was earlier in the co-infected group (3-4 days) when compared with fish infected with F. psychrophilum alone (6 days) or IHNV (5 days), confirming the synergistic interaction between both pathogens. Co-infection led to a significant increase in the number of F. psychrophilum colony-forming units and IHNV plaque-forming units within tissues. This finding confirms that when present together in co-infected fish, both pathogens are more efficiently recovered from tissues. Furthermore, pathogen genes were significantly increased in co-infected groups, which parallel the findings of increased systemic pathogen load. Extensive tissue necrosis and abundant pathogen present intracellularly and extracellularly in haematopoietic tissue. This was pronounced in co-infected fish and likely contributed to the exacerbated clinical signs and higher mortality. This study provides novel insight into host-pathogen interactions related to co-infection by aquatic bacterial and viral pathogens and supports our hypothesis. Such findings confirm that mortality in fish exposed to both pathogens is greatly elevated compared to a single pathogen infection. K E Y W O R D S co-infection, Flavobacterium psychrophilum, IHNV, rainbow trout How to cite this article: Ma J, Bruce TJ, Oliver L, Cain KD. Co-infection of rainbow trout (Oncorhynchus mykiss) with infectious haematopoietic necrosis virus and Flavobacterium psychrophilum. J Fish Dis. 2019;42:1065-1076. https ://doi.

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“…A lot of studies reported earlier were focused on gene expression analysis of single pathogen and specifically defined the expression pattern of limited genes [32][33][34][35][36] . Further, infection by two or more pathogens were reported in the olive flounder genome 37,38 . In order to solve these problem, we need plentiful genomic information to respond rapidly to multiple infection of pathogens.…”

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Gene expression profiles alteration after infection of virus, bacteria, and parasite in the Olive flounder (Paralichthys olivaceus)

Nam

Mishra

Gim³

et al. 2018

Sci Rep

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Olive flounder (Paralichthys olivaceus) is one of economically valuable fish species in the East Asia. In comparison with its economic importance, available genomic information of the olive flounder is very limited. The mass mortality caused by variety of pathogens (virus, bacteria and parasites) is main problem in aquaculture industry, including in olive flounder culture. In this study, we carried out transcriptome analysis using the olive flounder gill tissues after infection of three types of pathogens (Virus; Viral hemorrhagic septicemia virus, Bacteria; Streptococcus parauberis, and Parasite; Miamiensis avidus), respectively. As a result, we identified total 12,415 differentially expressed genes (DEG) from viral infection, 1,754 from bacterial infection, and 795 from parasite infection, respectively. To investigate the effects of pathogenic infection on immune response, we analyzed Gene ontology (GO) enrichment analysis with DEGs and sorted immune-related GO terms per three pathogen groups. Especially, we verified various GO terms, and genes in these terms showed down-regulated expression pattern. In addition, we identified 67 common genes (10 up-regulated and 57 down-regulated) present in three pathogen infection groups. Our goals are to provide plenty of genomic knowledge about olive flounder transcripts for further research and report genes, which were changed in their expression after specific pathogen infection.

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Distribution of marine birnavirus in cultured olive flounder Paralichthys olivaceus in Korea

Cited by 20 publications

References 35 publications

A survey of fish viruses isolated from wild marine fishes from the coastal waters of southern Korea

A survey of fish viruses isolated from wild marine fishes from the coastal waters of southern Korea

Co‐infection of rainbow trout (Oncorhynchus mykiss) with infectious hematopoietic necrosis virus and Flavobacterium psychrophilum

Gene expression profiles alteration after infection of virus, bacteria, and parasite in the Olive flounder (Paralichthys olivaceus)

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